Yamaha YZF-R125 Service Manual: Checking the steering head

Yamaha YZF-R125 Service Manual / Chassis / Steering head / Checking the steering head

1. Wash:

  • Bearings
  • Bearing races

2. Check:

  • Bearings
  • Bearing races Damage/pitting →Replace.

3. Replace:

  • Bearings
  • Bearing races

a. Remove the bearing races from the steering head pipe with a long rod "1" and hammer.

b. Remove the bearing race from the lower bracket with a floor chisel "2" and hammer.

c. Install a new dust seal and new bearing races.

CAUTION:

If the bearing races are not installed properly, the steering head pipe could be damaged.

NOTE:

  • Always replace the bearings and bearing races as a set.
  • Whenever the steering head is disassembled, replace the dust seal.

Checking the steering head


4. Check:

  • Upper bracket
  • Lower bracket (along with the steering stem) Bends/cracks/damage →Replace.
    Removing the lower bracket
    1. Stand the vehicle on a level surface. WARNINGSecurely support the vehicle so that there is no danger of it falling over. 2. Remove: Upper ring nut Rubber washer Lower r ...

    Installing the steering head
    1. Lubricate: Upper bearing Lower bearing Bearing races 2. Install: Lower ring nut Rubber washer Upper ring nut Lock washer Refer to "CHECKING AND ADJUSTING THE STEERING HEAD ...

    Other materials:

    Adjusting the throttle cable free play
    NOTE: Prior to adjusting the throttle cable free play, the engine idling speed should be adjusted. 1. Check: Throttle cable free play "a" Out of specification →Adjust. 2. Remove: Right side panel Refer to "GENERAL CHASSIS" on page 4-1. 3. Adjust: Throttle cable f ...

    Multi-function display
    Multi-function display Multi-function display "RESET/SELECT" button WARNING Be sure to stop the vehicle before making any setting changes to the multi-function display. Changing settings while riding can distract the operator and increase the risk of an accident. The multi- ...

    Safe Riding
    Perform the pre-operation checks each time you use the vehicle to make sure it is in safe operating condition. Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage. See page 4-1 for a list of pre-operation checks. This motor ...

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